Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
  • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
  • B01D35/143—Filter condition indicators
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
  • B01D35/147—Bypass or safety valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2201/00—Details relating to filtering apparatus
  • B01D2201/40—Special measures for connecting different parts of the filter
  • B01D2201/4046—Means for avoiding false mounting of different parts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M1/00—Pressure lubrication
  • F01M1/18—Indicating or safety devices
  • F01M1/20—Indicating or safety devices concerning lubricant pressure

Definitions

• Filters in particular for filtering the lubricating oil of an internal combustion engine
• the invention relates to a filter, in particular for filtering the lubricating oil of an internal combustion engine according to the preamble of the main claim.
• An oil filter for cleaning lubricating oil in internal combustion engines of motor vehicles is known from European patent specification 03 14 915.
• This consists of an at least approximately upright filter housing with a screwable cover, furthermore with an annular oil filter cartridge inserted into the filter housing, to which the contaminated oil is supplied.
• a floor drain valve which opens a drain channel when the cover is opened and the oil filter cartridge is removed.
• the valve consists of two springs and a valve plate and is designed in such a way that even if there is no oil filter cartridge, the same closes due to the build-up of oil pressure, so that an oil supply to the engine is ensured even when no filter cartridge is inserted.
• a disadvantage is that if the filter is not used, the unpurified oil reaches the lubrication points and leads to bearing damage.
• the engine can be used for a short time in emergency mode without an oil filter cartridge, but it is not recognized that no oil filter cartridge is installed.
• the invention is therefore based on the object of providing a filter, in particular for filtering the lubricating oil of an internal combustion engine, which signals a missing filter insert or prevents the engine from operating when the filter insert is missing.
• valve serves as a bypass valve between the crude oil side and the pure oil side and consists of a few components, ie only a valve body, a spring and a valve plate.
• Such valves are preferably made of thermoplastic.
• the spring is of course a metallic spring.
• the valve plate is a plastic ring which is slipped over the compression spring and the valve body and is welded, for example in an ultrasonic welding process, to a support body which is also made of thermoplastic.
• the securing element can be a tilting element or rocking lever, which prevents the cover from being screwed onto the housing by a locking action. Due to gravity or a spring, the tilting element blocks the lid when the filter is missing.
• a pressure relief valve or a bypass valve between the crude oil side and the clean oil side, it also being possible to monitor the function of the valve with a plunger which indicates an open position of the valve.
• the filter element is recyclable and consists of a zigzag folded filter material, which is provided with a potting compound on each end face.
• This potting compound is, for example, nitrile rubber and, in the manner of a radial seal, causes the raw liquid space to be separated from the pure liquid space.
• FIG. 1 shows the sectional view of a filter for filtering lubricating oil
• FIG. 2 shows a detailed illustration
• FIG. 3 shows a plan view of a securing element
• Figure 4 shows a detailed view of the securing element in the locked position.
• a filter according to FIG. 1 consists of a housing 10 with a crude oil inlet 11 and a pure oil outlet 12.
• the housing is closed with a cover 13.
• the cover is fastened and sealed by means of a screw connection 14 and a sealing element 15.
• a filter element 16 is located in the housing.
• This consists of a pleated paper or non-woven element 17 which is provided with plastic end plates 18, 19 at its end-shaped ends .
• the end disks simultaneously serve for radial sealing between the raw liquid area 20 and the clean liquid area 21.
• a support body 22 is arranged in the clean liquid area. This is provided with a pressure relief valve 23.
• the pressure relief valve consists of a compression spring 24, a valve body 25 and a valve plate 26 welded to the support body 22.
• the valve body is provided with a signal pin 27. This is normally not visible in the closed position. If the valve is in the open position due to tilting, this pin protrudes beyond the plane 28 of the support body 22 in accordance with the dashed line and thus indicates the lack of operational readiness.
• a securing element 29 is provided. This is shown in detail in FIG. 2.
• the securing element is located on the housing 13 of the filter and, as can be seen in the plan view according to FIG. 3, is provided with axle pieces 30, 31 and is rotatably mounted.
• the lever arm 32 bears against the filter element 16 and sets thus the lock 33 of the securing element 29 in a position which enables the cover 10 to be placed on the housing 13.
• FIG. 4 shows the position of the securing element 29, which assumes the same if the filter element is missing. Due to the gravity and the greater mass of the lock 33, the securing element tilts into the position shown. The lock 33 thus effectively prevents the cover 10 from being placed on the housing 13. Only when a filter element is pushed in does the securing element 29 return to the desired position according to FIG. 2.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
• Filtration Of Liquid (AREA)
• Lubricants (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7810145

Family Applications (1)

Country Status (10)

Families Citing this family (33)

Family Cites Families (17)

• 1996
  • 1996-10-26 DE DE19644646A patent/DE19644646A1/de not_active Withdrawn
• 1997
  • 1997-08-09 WO PCT/EP1997/004351 patent/WO1998018539A1/fr not_active Application Discontinuation
  • 1997-08-09 KR KR1019990703553A patent/KR20000052753A/ko not_active Ceased
  • 1997-08-09 JP JP10519955A patent/JP2001502602A/ja active Pending
  • 1997-08-09 EP EP97940066A patent/EP0934108B1/fr not_active Expired - Lifetime
  • 1997-08-09 DE DE59704889T patent/DE59704889D1/de not_active Expired - Fee Related
  • 1997-08-09 AT AT97940066T patent/ATE206630T1/de not_active IP Right Cessation
  • 1997-08-09 BR BR9712539-3A patent/BR9712539A/pt not_active Application Discontinuation
  • 1997-08-09 CZ CZ19991401A patent/CZ293244B6/cs not_active IP Right Cessation
  • 1997-08-09 US US09/297,127 patent/US6177003B1/en not_active Expired - Fee Related
  • 1997-08-18 ZA ZA9707409A patent/ZA977409B/xx unknown

Non-Patent Citations (1)

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